A fearless creative force whose work could be disturbing and perversely witty, she got little attention from the art world until her seventh decade, when she became its grande dame.

Louise Bourgeois, an internationally revered artist whose intensely personal work was inspired by psychological conflict, feminist consciousness and a fertile imagination, has died. She was 98.

Bourgeois died Monday at Beth Israel Medical Center in Manhattan after suffering a heart attack on Saturday, said Wendy Williams, managing director of the Louise Bourgeois Studio in New York.

Known for sculptures of giant spiders, women with extra breasts, double-headed phalluses and rooms that resonate with loneliness and dread, Bourgeois was a fearless creative force whose work could be disturbing and perversely witty. Although she got little attention from the art world until her seventh decade, she became its grande dame, constantly in demand and showered with honors.

Bourgeois often left viewers with questions about the meaning of her work, but made no secret of painful experiences that shaped it. The spiders — including "Maman," a 35-foot-tall piece commissioned for the inauguration of the Tate Modern gallery in London in 2000 — are a tribute to her beloved mother, whom she described as a pillar of inner strength who was "clever, patient and neat as a spider."

Her father, whom the artist perceived an a domineering philanderer, didn't fare so well. In "The Destruction of the Father" — a 1974 installation that appeared at the Los Angeles Museum of Contemporary Art in 2008-2009, in a traveling retrospective — Bourgeois re-created a youthful fantasy of her father being dismembered and devoured by his family.

"She smashed a taboo," said Christopher Knight, The Times' art critic. "Bourgeois was the first modern artist to expose the emotional depth and power of domestic subject matter. Before her, male artists had only nibbled around the edges, and women just weren't allowed."

Born in Paris on Christmas Day 1911, Bourgeois lived in France until 1938. The second of three children born to Josephine Fauriaux and Louis Bourgeois, she was part of a family that operated a tapestry gallery below their apartment on Boulevard Saint-Germain and a tapestry restoration firm in a village south of Paris. They had a comfortable life, except for a period during World War I, but her parents' marriage was fraught with tension that escalated when Louis had a liaison with an Englishwoman who was the children's live-in tutor.

Louise's resentment about the ménage à trois eventually became fodder for her art. In a 1982 New York Times interview, she said that twisted forms in her work reflected her childhood dream of getting rid of her father's mistress by "twisting her neck." But Bourgeois' indomitable spirit and creative energy prevailed.

"My work is a form of psychoanalysis," she wrote in an e-mail exchange with the Los Angeles Times in 2007. "It is a way of coming to grips with my anxiety and fears. It is an attempt to be a better person.… There is a lot of ambivalence in the work. There are many hanging pieces, which signify a fragile state. There are pieces that oscillate and rock, which also convey fragility. We all have pink days and blue days. I am trying to seek a balance between the extremes that I feel. I want to be reasonable."

In the art world's eyes, she succeeded.

Art historian Robert Storr has praised Bourgeois as "among the most inquisitive and best-informed artists of her generation. No analysis of her work or its internal dynamics that sidesteps this fact, or fails to consider the unique mix of intuition and erudition, psychological compulsion and sheer intelligence that has guided her, can possibly claim to measure the full range of its meanings."

Bourgeois studied art at several Parisian schools, including the Académie des Beaux-Arts and the Académie Julian, and in the studio of painter Fernand Legér. In 1938, she married American art historian Robert Goldwater and moved to New York, where she spent the rest of her life.

She began to establish herself as an artist in the 1940s while raising three sons, Michel, Jean-Louis and Alain, and had her first solo exhibition in 1945 at a New York gallery. Her husband, a professor at New York University, became known for exploring connections between so-called primitivism and Western modernism. The couple enjoyed a rich intellectual life until Goldwater's death in 1973, about a decade before Bourgeois gained wide recognition.

She began her career as a painter of tapestry-like abstractions, but soon became intrigued with the Surrealists' exploration of the subconscious as a source of images and ideas. Her "Femme-Maison" paintings of 1946 and1947 merge Surrealism with feminism in depictions of women with houses for heads, defined by their domestic roles.